There seems to be multiple points of view on this matter. One may say that his insertion of Coruscant and other EU elements in the prequels are an indication that he is involved heavily. Not to mention his say-so's on certain story elements in EU prose (Anakin dying instead of Jacen, no more post ROTJ Wookie Jedi, Yuuzhan Vong being original villains instead of Proto-Sith, etc...) But then we've got stuff like the TCW cartoon, and what may possibly come in Episode VII. Does that mean he doesn't give two siths about the EU? Continuity is a lie, there is only Word of Lucas Through Word of Lucas, I gain Ownership Through Ownership, I gain Power Through Power, I gain Sole Creative License Through Sole Creative License, my EU chains are broken The Sequels will set me free.